Process of producing dental suction.



Y J. H. ABBOTT.

PROCESS OF PRODUCING DENTAL SUCTION.

APPLIUATION FILED MAY 18, 1912.

Patented Apr. 7, 1914.

A TTORNEY 4/, will III n era if f rrrcn JAMES HERMAN ABBOTT, OF PHILADELPHIA, PENNSYLVANIA.

PROCESS OF PRODUCING DENTAL SUCTION.

Patented Apr. '7, 1914.

Divided and this application filed May 18,

1912. Serial No. 698,103.

To all whom it may concern Be it known that I, JAMES HERMAN AB- Borr, a citizen of the United States, residing at 2534 South Twentieth street, Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented a certain new and useful Process of Producing Dental Suction, of which the following is a specification.

The purpose of my invention is to secure a preferably fiat apertured dental suction disk to a plate and cup it by pressure about an annular portion of the disk and greatest at a short distance from the edge of its central aperture. I prefer to apply the pressure by means of a hollow tubular rivet and a washer having an annular rib which engages the material of the disk. I avoid vulcanization, make my process applicable to old or new plates and permit initial manufacture of a suitable seat for later applica tion of the suction without interfering with the use of the plate as plates have previously been used until such a time as a sepa rate suction is desired and applied.

Among various means by which my in vention may be and is carried out, I have selected the form illustrated because of its simplicity, effectiveness and inexpensiveness and ease and speed of application.

Figure 1 is a broken vertical section through the preferred form of construction for carrying out my invention, showing the parts in separated position. Fig. 2 is an enlarged broken section corresponding to Fig. 1 with the parts in assembled position. Fig. 3 is a section at right angles to Figs. 1 and 2 showing a dental plate prepared for application of my invention.

This application is a division of my application No. 643,111, filed August 9, 1911. Further detail in regard to variations in the means by which my process may be carried out will be found in this application.

' The dental plate 1, corresponds in general contour to the shape of the roof of the mouth in which it is intended to be applied and is normally provided with a vacuum Q recess 2, whose floor is usually quite curved in the section corresponding to Fig. 3, but nearly straight in all sections corresponding to Figs. 1 and 2. In order to prepare the plate for application of my dental suctions, I form an additional recess or subrecess, here illustrated at 3, by any suitable means,

the aperture 4: at the same height axially throughout that annular portion of the floor of the recess against which the pressure will be brought to cup the disk.

In the application of rubber disks as so far produced, there has been a tendency either to wedge the disks outwardly from the aperture by the character of fastening used or to distribute the pressure upon. the disk with substantial uniformity over a relatively wide portion of the disk and of the floor upon which it rests.

I have discovered that the best results in retention and sea-lin of the suction disk and in uniform- :ity, cl? :require that the greatest pressure upon the disk be exerted at a short distance outwardly from the aperture of the disk and extend over but a relatively narrow annular space and that approximately the same pressure be applied upon the disk in all direcectiveness and permanence of cupping tions from the center of the disk. This requires a certain relation between the washer by suitable boring and counter-boring by means already in the dentists possession and thatthe disk may then be set quickly and surely by means of a rivet set and cooperating rivet parts suited to the surface of the counterbore.

I prefer to use an initially flat rubber disk 15 of existing form and to get all of my cupping action by means of the clamp which holds the disk.

In the application of my disk, it is not necessary to utilize the edges 6 of the counterbore at all, though they may form a partrial support against the cup in case ct 111th mate breaking down of the same. These edges, therefore, need not be uniform in height about the sub-recess.

In order to reduce the plate as little as possible, the counter-boring to form the subrecess 3 will ordinarily stop as soon as the entire surface to be used has been cut to the contour desired.

The device which I utilize for compressing the disk to cup it comprises a rivet 7 and washer 8. I use a solid head rivet to close the space through the plate and make it tubular, as at 9, because of the additional vacuum space thus provided, the ease of turning the tubular end, and the ease of removing the turned end for replacement of my cup when required. Since the head of the rivet is placed upon the labial side of the plate, I there recess the plate, as at 10, utilizing any suitable sealing means between the head and the plate, as desired. The washer 8, apertured at 11, is formed upon the side next to the plate as an annular rib 12, giving its closest approach axially to the bottom or floor of the recess 3, at a short distance radially from the aperture. The opposite face of the washer is also shown as annularly recessed, corresponding to the annular rib, to provide space within which the end 13 of the tubular rivet may be turned and to give additional vacuum space, resulting in a washer of substantially uniform thickness throughout.

In order to bring pressure to bear upon the disk to a greater extent at a short distance from the aperture than adjoining the aperture and thus to cup the disk without tendency to wedge it outwardly from the aperture, I compress the disk between the washer and the bottom surface of the aperture 3, and retain the parts in this position by turning the tubular end of the rivet 8.

I have shown the jaws let, 15, anvil 16 and head 17 of a pair of rivet-setting pliers by which the washer may be seated and the rivet set, though obviously other means could be utilized. The anvil is fiat at 18, corresponding to the preferred shape of the head of the rivet, and the head 17 is provided with a central projection 19 to guide it into the rivet and hold the latter in fixed centered osition. The head 17 also in the construction illustrated, carries an annular rib or projection 20 for the purpose of engaging the washer to press it into place Copies ofthis patent may be obtained for five cents each, by addressing the Commissioner of lPatents,

While the intermediate portion 21 of. the

head is turning the rivet about the inneredge of the washer.

I prefer to slope the outer part of the face 7 Though I bring the greatest pressure.

upon the disk at a short distance outside of the inner edge of the disk there is some advantage in continuing the washer inwardly from this point at an angle diverging from the seat to continue its contact with the disk, preferably, all the way to the inner edge of the disk,

WVhat I have designated as a rib is preferably circular and uniformly spaced from the aperture for the rivet, though other continuous forms cooperating with the seat would evidently cup the disk.

In my use of the term disk in the claims, I have considered it as including forms, whether flat or partially cupped, which were advantageously clamped or used in the manner called for by the claims to give or increase the cupping. I

' Having thus describedmy invention, what I claim as new and desire to secure by Letters Patent is V 1. The process of cupping disks for dental suctio-ns, which consists in compressing an apertured disk against a seat by applying cupping pressure annularly about the aperture greater at a short distance from the edge of the aperture than at its edge and uniformly about the length of the annulus.

2. The process of placing a dental suction, which consists in boring a hole entirely through the plate, counterboring the hole thus formed to provide an annularly even surface about the hole, and compressing an apert-ured rubber disk upon the surface so formed by annular means having greatest compression at a distance from the edges of the hole and aperture.

JAMES HERMAN ABBOTT.

Washington, D. C. 

